package com.hoo.util;

import org.springframework.web.servlet.HandlerMapping;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class RequestUtils {


    /**
     * 获取请求路径
     *
     * @param request
     * @return /url/1
     */
    public static String getRestURL(HttpServletRequest request) {
        return (String) request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
    }

    /**
     * 获取请求路径表达式
     *
     * @param request
     * @return /url/{id}
     */
    public static String getRestPatternURL(HttpServletRequest request) {
        return (String) request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE);
    }

    /**
     * Convenience method to set a cookie
     *
     * @param response the current response
     * @param name     the name of the cookie
     * @param value    the value of the cookie
     * @param path     the path to set it on
     */
    public static void setCookie(HttpServletResponse response, String name, String value, String path, int expiry) {
      /*Set-Cookie: <name>=<value>[; <Max-Age>=<age>]
        [; expires=<date>][; domain=<domain_name>]
        [; path=<some_path>][; secure][; HttpOnly]
        */
        Cookie cookie = new Cookie(name, value);
        cookie.setSecure(false);
        cookie.setPath(path);
        cookie.setMaxAge(expiry);
//        cookie.setMaxAge(AppConstants.HOUR * 24 * 30); // 30 days

        response.addCookie(cookie);
    }

    /**
     * Convenience method to get a cookie by name
     *
     * @param request the current request
     * @param name    the name of the cookie to find
     * @return the cookie (if found), null if not found
     */
    public static Cookie getCookie(HttpServletRequest request, String name) {
        Cookie[] cookies = request.getCookies();
        Cookie returnCookie = null;
        if (cookies == null) {
            return returnCookie;
        }

        for (final Cookie thisCookie : cookies) {
            if (thisCookie.getName().equals(name) && !"".equals(thisCookie.getValue())) {
                returnCookie = thisCookie;
                break;
            }
        }

        return returnCookie;
    }

    /**
     * Convenience method for deleting a cookie by name
     *
     * @param response the current web response
     * @param cookie   the cookie to delete
     * @param path     the path on which the cookie was set (i.e. /appfuse)
     */
    public static void deleteCookie(HttpServletResponse response, Cookie cookie, String path) {
        if (cookie != null) {
            // Delete the cookie by setting its maximum age to zero
            cookie.setMaxAge(0);
            cookie.setPath(path);
            response.addCookie(cookie);
        }
    }

}
